US2347749A - Photographic apparatus - Google Patents

Description

May 2, 1944. s.. F. MONROE PHOTOGRAPHIC APPARATUS 2 Sheets-Sheat 1 Filed Feb. 24, 1941 Y NM WN A Z m T 1|. |D i U Q T, j 2 f y W w y 1944- s. F. MONROE 2,347,749

PHOTOGRAPHIC APPARATUS Filed Feb. 24, 1941 2 Sheets-Sheet 2 7, "Q IIl L F q n;

6 WWW/77A WAz Patented May 2, 1944 PHOTOGRAPH! APPARATUS Spencer F. Monroe, Chicago, Ill., assignor to Monroe Camera Corporation, Chicago, 111., a corporation of Illinois Application February 24, 1941, Serial No. 380.243

1 Claim.

This invention relates to photographic apparatus which has been designed to produce a large number of negative photographs in a comparatively short space of time. The apparatus of the invention embodies some of the principles oi the ordinary camera and the moving picture camera.

The object of the invention is to provide means for obtaining a large number of individual photographs in a relatively short time, which photographs may be developed in the usual manner, that is individually, or collectively as a part of a roll of film, thus minimizing the time required in taking the picture and developing the negatives thereof.

Another object of the invention is to take a large number or series of identifying photographs a camera having a single chamber, which is capable of taking separate photographs on a sensitired strip of material so that when a print is made from the strip of sensitized material you have a composite of the separate photographs.

In a specific embodiment the invention comoration of the separate shutters and the means for advancing the sensitized film between theof this invention, with the front cover removed.

Figure 2 is a sectional view in elevation taken along the broken line 2 -2 of Figure 1.

Figure 3 is a plan view of the central portion or the camera taken alo g a plane below the motivating means indicated as M in Figure 1.

Figure 4 is a sectional view in elevation taken along the line 4-4 of Figure 8.

Figure 5 is a sectional view in elevation taken along the line 5-5 of Figure 3.

Figure 6 is a representation of a composite photograph that might be produced by this camera shown in reversed relation to the blocked-off views of the him as shown in Figures 4 and 5.

Figure 1 shows the front of the housing H of the camera removed, whereas in Figure 2 portions of the front, back and bottom of the housing H are shown in place. In Figures 1 and 2 the means prises a photographic camera havinga front I lens operated by a front revolving shutter; a container for the unexposed photographically sensitired material, a container for collecting the exposed photographicaily sensitized material, means !or causing the photographically sensitized matethe front lens, a photographic chamber with meansltherein to-hold an object to be photograped in a position so that light is reflected therefrom to a means for deflecting the reflected light rays into one of the lenses of the camera, and' means operated by a motor ior correlating the opfor actuating the moving parts of the apparatus is indicated by motor M. The upper compartment of the camera which contains the motivating means and attending apparatus, which is not part of this invention, is separated from the central compartment by shelf A, and the central compartment is separated from the lower compartment and photographic chamber by shelf B. The photographic chamber is a portion oi the lower compartment closed in by walls C and D. A block it is centrally locatedon the bottom of the photographic chamber and mounts a metallic frame suitable for holding a piece of paper. cardboard, or a card, in place while the same is being photographed. The shield 6 cuts down the amount of light passing through opening I.

The"primary object or person to be photographed is placed in front of lens" I which may be manually adjusted for the desired focal distance. Light rays fromthe person or object being photographed pass through lens i to the sensitized surface of the photographic material 4 whiehisunwoundfromarollorreel andiswoimdonarollorreelineasel. Boweveneircularshutteriinterruptsthethroug passageofthelightraysuntilnotchlorlisrotated intoapositiondirectlybehindlens i. For theshorttimethat eitherofthenotcheslandl passes directly behind lens I, the person or obiectlocatedlnfrontofthecameraandinline withlens I isbeingphotographedonthefllmor other sensitised material 2 standing behind shutterlanddirectlybehindlens l. e

The rear lens I of the camera is shown in Figure 2 immediately behind a rotary shutter 9. However, rear lens 8 is not directly behind front lens I which fact is illustrated in Figure 3. Neither are both lenses at the same horizontal level which fact is shown in Figure 2. The reason for this on center arrangement of lenses will be obvious to those skilled in the photographic art from a study of Figure 6 which iilus trates the type of composite photograph this invention i's designed to produce. The photograph of the person appearing in the upper right hand corner of Figure 6 was taken through front lens I on the side of the film exposed to the rays through the front lens. The photograph of the card of information, including his signature and thumbprint, if desired, constituting the remainder of Figure 6, was taken through rear lens I on the side of the film 2 exposed to the rays through the rear lens.

A piece of paper or cardboard, or'a special card having all the information desired written or printed legibly thereon is placed on block E with the face of the. card up so as to be well lighted by a suitable source of light It. One or more sources of light ll may be arranged as desired in the photographic chambers so as to fully illuiminate the face of the exposed card. Light rays from the card are reflected vertically through opening I in the top of the photographic chamber and arereiiectedbymirror ll soas to pass through rear lens I. The reflected and deilected light rays pass through lens I but are interrupted by circular shutter 8. As the shutteris rotate'i circular openings l2 and I! pass in succession in front of lens I. When either opening it or ii is directly in front of lens I. the light rays reflected from the card and deflectedbythemirrorimpingeontheside ofthe iilm2exposedtothelightmsfromrearlensl.

'l'heshuttertforfrontlenslrotatesatthe disk I! continues to revolvepin ll games fromthebentnngerofelement llaftershaft ll hasrotatedacertainamountandthenshaft ll stops turning. Disk ll continues revolving. however, until pin II meets a bent finger of element II. and again the revolving disk ll causes the shaft I to rotate. After the shaft hasturned part of a complete revolution pin II disengages the bent prong of element ii and shaft ll stops turningbutdisk i1 stillcontinuestorotateby reason of connection to motor at or other actuatingrneansused. Eachtimepin II or 20 engages the bent fingers of circular element It the shaft II is rotated through part of a revolution and simultaneously the shutters I and 8 which are secured to shaft il rotate a corresponding amount.

As disk I! continues to revolve around on shaft is pins i! and 2| will engage in turn extensions of star wheel II and rotate it a definite amount so long as the pins are in contact with the sprockets of the star wheel. when the pins of disk ii are not in contact with the sprockets of the star wheel 2|, the star wheel does not turn. Figure 4 shows pin 20 as it moves away from the sprocket of star wheel 2| for which reason the latter has stopped turning. Figure 4 also shows pin it in a position just before it engages the bent prong of circular element II. Starwheel 2| issecuredtoadmmfiwhichhas two bands of regularly spaced teeth around it which engage the holes which line the two edges of film 2 at regular intervals. Thus the rotation of star wheel II revolves drum 2! and causes the film 2 to'advance between the front and rear lenses of the camera.

Film 2, or any other photographically sensitive material which may be employed, by reason of the revolving drum 2! is unwound from a reel or drum enclosed in case 8, moved between the front and rear lenses of the camera simultaneously, and wound on to a reel or drum enclosed incasel. Themovementofthereelordrumin caselisalsobypulleyarrangementto themeansmusedtorotatedlskil shownin Figureslandz. Ifdesiredthefllmneednotbe collected on a reel in case A but may be cut oi! and developed as individual pictures, or short strips of pictures.

Atthispointitwiilbecleartothoseskillodin restricttheexposuretolightraysooming throughlenslandnotcheslorLabi-assinsert behindwebbedplateuwhichblocks majorportionofiilmlandonlyallows aces-no blocks of! light from the lower right hand corner of a section of the film which already bears the imprint of the person sitting in front of the camera. The film or material which is photographically sensitive passes between inserts 2i and 20. The result of blocking 0! light rays coming through the rear lens I and taking a picture of the person in front of lens i, and then taking a picture of the subject of photography in the photographic chamber of the camera while blocking oil light rays coming through front lens I. would be a composite photograph of both subjects of photog:aphy on the same film. An example of such a composite photograph is shown right side up in Figure 6, instead of inverted as it would be when the pictures were taken.

A special feature of this invention is the ability of the operator to take a picture of a person with the front lens, and a second or so later take a picture of" any subject of photography that might be placed in the photographic chamber of the machine with the rear lens, and both pictures will be taken on the photographic film without any movement of the film between the taking of the two photographs. In such a case the front shutter is in approximately the relation shown in the drawings to the rear shutters.

The operator can adjust the front and rear shutters on shaft M so that the notches I and I in the front shutter 5 rotate past the front lens I at exactly the same time the circular openings l2 and I! in rear shutter 8 rotate past the rear lens l. In such a case the machine is capable of taking pictures with both the front and rear lenses simultaneously and without any movement of the photographic film.

When the subject of photography before the front lens is dark, that is, it does not reflect a lot of light which is supplied from other compartments of the machine not shown in the drawings, or the background is dark, or the light in the room is insuflicient, the operator will adiust the front and sear shutters so that the circular openings in the rear shutter pass in front of the rear lens beforethe notches in the front shutter pass in the rear of the front lens. When that adjustment is made the circular openings in the rear shutter will rotate right on by the rear lens, whereas by reason of the location of pins ilandlllincamdisk llthenotchesin the front shutter will hesitate momentarily behind the front lens before rotating past. In that way there is a longer time of exposure for the subject of photography before the front lens which will tend to equalize the light intensities supplied to the film from the front and rear lenses.

In the majority of cases the light reflected from the subject of photography in the photographic chamber and then deflected to the rear lens will be less than the light reflected by the subject of photography before the front lens, for two reasons: (a) the light rays which are deflected by the mirror through the rear lens and then have to penetrate through the fllm to the side of the film which is photographically sensitized lose about thirty-seven per cent of their intensity: (1 the compartments of the camera which are not shown completely in Figures 1 and 2 of the drawings are utilised to house house lights with reflectors for flood lighting the subject of photography before the front lens. For those reasons the shutters are usually adjustedontheshaftasshowninthedrawingsin order to have the rear shutter pause momentarilyinfrontofthe rearlcnssoastoallowa briefly longer time of exposure to the light rays from the photographic chamber.

I claim the following:

In a pho oarlb ic camera the combination of separate lenses with individual shutters for each lens, means for guiding photographically sensitive material between said lenses comprising thin strips of metal with portions cut out to permit the passage of light rays so as to impinge on opposite sides of said sensitive material, means for causing said sensitive material to move between said strips of metal, means for simultaneously operating said shutters and means for correlating the motion of said sensitive material and said shutters comprising a revolving disk with a plurality of pins extending down therefrom so as to cheese successively said means for moving said material and said means for operating said shutters.

ll. MONROE.

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